NEET Biology Plant Kingdom Question Bank Spirogyra and Ulothrix

  • question_answer
    When three Spirogyra filaments are participating in conjugation, the possibilities are that          [DPMT 1987]

    A)                    The middle one may be female and outer ones are male

    B)                    The middle one may be male and outer ones are female

    C)                    Both (a) and (b)

    D)                    None of the above

    Correct Answer: C

    Solution :

                       Rarely three filaments may take part in scalariform conjugation. Here the central filament shows relative sexuality and behave as male to one and female to other so that zygospore are formed in either central or lateral filaments.


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